DailyDirt: Better (Bigger) Batteries

from the urls-we-dig-up dept

Battery technology is getting better all the time, but unfortunately not quite at the same pace as Moore's law. While some folks lament the bottleneck of pocket-sized batteries that limit the operation of a phone or laptop to just a few hours (or a couple days on standby), some bigger batteries out there are limiting the growth of renewable energy use. Here are just a few battery projects that could solve some larger scale energy problems. If you'd like to read more awesome and interesting stuff, check out this unrelated (but not entirely random!) Techdirt post via StumbleUpon.

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  1. identicon
    Anonymous Coward, 18 Oct 2013 @ 11:32pm

    Re: Re:

    batteries store electrical energy through chemical reactions (ionic potentials).

    Chemical reactions created by the application of that same electricity (ie, you charge the battery).

    Supercaps store their electrical energy from electrostatic fields, inductors store their electrical energy from electromagnetic fields.

    But if you can only do a '2 terminal' analysis of a batter, or a bank of super caps then you would not be able to determine any real difference, you would find from your analysis that you are able to apply electrical power to the 2 terminals, and see that you able to retrieve that same energy back out.

    Now do the same 2 terminal analysis on the output of a coal fired power station, would your analysis be different.

    Again, unless you put electricity in a battery it is not going to produce any electricity OUT of the battery, a battery is an electricity store, not a producer of electricity.

    or, before you can get electricity out of a battery, you need to produce it and put it in the battery, then that battery can store that electricity and supply it at another time.
    But the battery itself cannot produce that electricity, you need something like a generator, to generate electricity and produce it for the battery.

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